Google assistant and the FairyNest products work together to help you control your LED light nice and easy. You can simply ask Google Assistant to change the LED effect. Before you can do that, you neet to link to FairyNest account first. Then you can talk to Google assistant by follow phrases: "Hey Google, ask fairy light to run the rainbow effect." "Hey Google, ask fairy light to run the fire effect." "Hey Google, ask fairy light to run the stars effect." "Hey Google, ask fairy light to run the ripple effect." ... Also, you can change the effect's speed by: "Hey Google, ask fairy light to speed up." "Hey Google, ask fairy light to run faster." "Hey Google, ask fairy light to speed down." "Hey Google, ask fairy light to run slower."